Created To Close The Gap & Eliminate Confusion

Traditional pre/post-natal care often tests the bare minimum, leaving countless symptoms unexplained: infertility, fatigue, anxiety, hair loss, low milk supply, brain fog, mood shifts, and more. Demetra Diagnostics fills this gap with advanced, stage-specific lab panels and expert interpretation that support women from preconception through postpartum.

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our philosophy

Motherhood Is Complex, Your Lab Work Should Be Too

At Demetra Diagnostics, we believe every woman deserves lab testing that reflects the full complexity of pregnancy, postpartum, and the seasons in between. Because your hormonal landscape, nutrient demands, thyroid function, and inflammatory markers don’t stay the same from preconception through postpartum (and neither should your labs).

Built by practitioners who live and breathe functional lab testing, our approach fills in the gaps that standard prenatal or primary care often can’t address, offering a more complete picture of your health.

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what we do

We believe women shouldn’t have to wonder whether what they feel is “normal.”
Demetra Diagnostics gives them answers clearly and with an action plan.

Three Specialized Testing Tracks
(Pre-Conception, Pregnancy, Postpartum)

50+ Biomarkers Per Track Including Thyroid, Hormones, Inflammation, Micronutrients, & More

6 Months Community Access With Expert Q&As & Educational Resources

Maternal Health Expert Analysis With Pregnancy-Specific Reference Ranges & Protocols

Clear Results Summary With Prioritized Action Steps To Understand Your Body's Changes

Optional Add-ons Including Toxin Testing, Gut Analysis, & Advanced Hormone Mapping

The Female Founders &
Practioners

Lauren and Romana have spent years changing lives in functional medicine, helping clients uncover root causes through comprehensive testing. But when they turned their attention to maternal health, they discovered a glaring void.

Women were coming to them frustrated, dismissed by traditional prenatal care, searching for answers about symptoms that affected their daily lives. Despite their clinical expertise, both practitioners realized that even functional diagnostic testing wasn't adequately providing maternal protocols.

The solution became clear: create testing tracks designed exclusively for the unique physiology of motherhood, interpreted by specialists who understand what pregnancy and postpartum actually demand from the body.

Here's how each brings their expertise to this mission...

the heart behind demetra

Meet Lauren

Lauren Papanos MS, RD, CSSD

Lauren is a nationally recognized nutrition expert and founder of Functional Fueling Nutrition, where she has spent over a decade helping individuals with endocrine, thyroid, and autoimmune conditions understand their bodies and resolve symptoms naturally. As a Board Certified Sports Dietitian with advanced training in functional endocrinology, she has guided thousands of clients who felt dismissed by traditional care.

Her journey to creating Demetra began during her own pregnancy. Despite her extensive clinical expertise and access to advanced testing, Lauren experienced firsthand how traditional prenatal care left critical questions unanswered. This personal experience as a new mother, combined with years of witnessing clients struggle with inadequate testing during their reproductive years, sparked the vision for comprehensive maternal health testing that actually serves women through their most transformative seasons.

Meet Romana

Romana Brennan Miranda MS, RD

Romana brings deep expertise in functional medicine and diagnostic interpretation to Demetra Diagnostics. As a key clinician at Functional Fueling Nutrition, she has developed extensive experience analyzing complex laboratory results and translating them into clear, actionable protocols for clients with hormonal and metabolic imbalances.

Her specialized training in functional endocrinology and commitment to root-cause investigation made her the perfect partner for Lauren's vision of maternal health testing. Romana has witnessed countless women navigate fertility, pregnancy, and postpartum with lab work that tells only part of their story, fueling her passion for the comprehensive approach that Demetra provides.

Ready To Choose Your Testing Track?

Comprehensive testing packages with expert analysis and 6 months of community support for every stage of your maternal health journey.

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"It helped so much to be able to get tangible advice that I was able to implement; it regulated whatever was going on in my body."

- Kara

"While doctors were able to help with the basics, I felt like I had to do a lot of it alone. But, many people don’t know how to do their own research."

- Raquel

"Within 6 months my acne completely cleared, my painful bloating resolved, and I ultimately became pregnant shortly after."

- client 3

"Baby boy is healthy and my milk supply is very strong. All my hard work paid off, everything you told me to do worked!!!

- client 4

See The Case Studies

WHAT CLIENTS & MOTHERS ARE SAYING